Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 1368 (2003): Dimensions for ends of parts with externalISO metric threads [PGD 31: Bolts, Nuts and FastenersAccessories]

This &Han Stanbard ( Third Revision ) virhich is identical with ISO 4753-1933 “ Fast&j@ y! Ends of. parti with exi6f&al metric ISO thtiad ’ issued by the International Organitatidn f+r Standamtion ( 130 ), ,&$ ‘abated by the J@dian Standards lnstituti,on on ,the recomr$#ndat@rC of the Bolts, Nuts and F$&tqq& A<c?ssories Sectional Committee and approval of’ the ~har@~l. Engindetlng Division.CQuncll,

.

.-:g;$‘h.@Qinal version of this standard was published in 1961. and .revised in 1967 and &M. The @se&t r&vision of the-standard has, been made by adoption of IS0 4753-?Q33 to l@ng it’in line ‘+th-IS0 standard. ,; &;r;’ ;* .” - *I . > I. _I* In the adopted standard certain terminology and conve,nti&ns .are,.,not’.“ideniical wariw those used in Indian Standards; attention is specially,,d2awn to the,f&Owiitg; .‘. .: ’

:.- ‘. ,-. ._.’ comma ( , ) has been used a&a decimal marker-whik in lndiaq Standaids; fh4 cMrtent p&tice

is.to use point (“) as the decimal market, ; ~ ’ : :..-I ‘.

Wherever the wo&“Irtternational,Stand.ard’ app$ar .referri&‘&his. sta&$,.&y sF&jtd be read as ‘In~ij%Standard’. . -r

l . TIJ .,

Cross Reference ‘I.-’ :i *.>x : ,i. ,, _I

_.. :’ :j _:. 61

1, hernational Standard. : ’ Corresponding Indian &&#ar# ‘. _: c, a ‘; t IS0 rqs IS : 8536-1977 Dimensions of fastel8.w ( Techni-

L tally equivalent with respect to deiignation of . . dimensidns only )

-i ,

‘. . *

,._ -: I .-

Adopt.& 7 January 1987 @ Se&mber,l*, BIS :., t r

BUREAU 0F INDIAN STANDARDS MANAK BHAVAN, Q, BAHADUR StiAH ZAFAR MAR@

NEW DELHI 110099

6r 2

.

J ,

IS:1368-1987

ISO 4753.- 1983

1 Scope and field of application *

This international Standard lays down the form and dimensions of ends of parts with external metric IS0 thread (for example, bolt and szrew ends) recommended for use, unless otherwise specified in the appropriate product standard.

2 Reference

IS0 225, Fasteners - Bolts, screws, studs and nuts - Symbols and designations of dimensions.

IS: 1368-1987

IS0 4753 - 1983

3 Dimensions

As-rolled end

Flat point = a0 ‘1 -._ GIP __.-_ T!?

u I

Cone point

Chamfered end Maximum diameter Rounded end

Short dog point Long dog point

‘adius

Truncated cone point

l 120’ t.20 for short length screws; see product standard, e.g. IS0 4027

Scrape point

Cup point

NOTES

1 The 45’ angle applies only to the portion of the point below the root diameter of the thread.

2 Other p,roprietary scrape forms are permissible.

d, =d - 1,6P

dr =0,5d20,5mm

(k =3PkO,Smm

1" =SP+O,Smm

IS : 1368 - 1987 IS0 4753 - 1983

Table Dimensions in millimetres

Thread diameter d

1

dP

h14

0,5

d,’ )

h16

0.1

dz

h14

21 z2

+bT14 +bT14

- -

1.2 I W 0,12 - - -

1.4 0.7 0.14 0.7 0,35 0.7 d

1.6 03 0,16 0,8 0.4 0.8

1.8 0.9 0.16 0,9 0,45 0.9

2 1 0.2 1 0.5 1

I 2.2 I 12 I 022 I 1,1 I 0,55 I 1.1 I

I 2.5 I 1.5 I 0.25 I 12 I 063 I 1,25 I

3 I 2 0.3 1.4 0,75 I,5 3.6 2.2 0.35 I 1.7 I 0.88 ,I 1.75 I

I I 1 I I I

4 ! 2.5 0,4 2 1 2 1

4.6 I 3 On45 2,2 I 1.12 2.25 6 3.5 0.5 2,5 1,25 I 2.5 . I

1,5

7 I

5

2 4 1,75 3,5 8 5.5 I 2 5 I 2 4 I

10 7 2.5 6. 2,5 5

12 8.5 3 7 3 6 I 16 14 I 10 12 I 4 4 10 8.5 I 4 3,5 I 8 7

18 I 13 5 11 4,5 9

26 16 5 13 5 I 10 I I

22 17 6 15 5,5 11

24 18 6 16 6 12

27 21 8 - 6.7 13#

30 23 8 7,5 15

1) < M5 no flat part on the cone required; the point may be slightly rounded.

Printed at Central Electric Press. Delhi-28